Every story told, is folded into the corpus of all human stories, all variations of the heroes journey, all variations of the hammon-cycle. AI by being trained on the corpus, is average - which makes it better than 80 % of mankind.

But we are tired of many stories. We see "new" movies until we are around 20 - then the repetition sets in- we get a refined taste and long for the exotic (-30) until finally, we search for outliers, for anything new, desperate under the sun.

AI can not provide that. But also humans can not provide that. Every bard, every writer, every poet, every band rises every morning to compete against the beatles. Most of them loose and thus abandon the craft to win bread elsewhere.